Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Histological Changes of Androgenic Gland According Reproductive Cycle in Macrobrachium nipponense (De Haan, 1849)

징거미새우, Macrobrachium nipponense 생식주기에 따른 Androgenic Gland의 조직학적 변화

  • Kim Dae Hyun (Resources Enhancement Institute, National Fisheries Research and Development Institute) ;
  • Kang Jung Ha (Biotechnology Division, National Fisheries Research and Development Institute) ;
  • Lee Jae Young (Department of Biology, Dongeui University) ;
  • Jeong Jee Hyun (Department of Biology, Dongeui University) ;
  • Kim Byung Ki (Department of Biology, Dongeui University) ;
  • Han Chang Hee (Department of Biology, Dongeui University)
  • Published : 2002.05.01
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Abstract

The androgenic gland secretes a hormone, androgenic gland hormone, which is believed to act on the differentiation of the primary, secondary, and behavioral sex characteristics in most malacostracan crustaceans. Based on the changes in gonado-somatic indexe and histological observation of testis and androgenic gland cell, testicular maturation and spermatogenesis of M. nipponense occurred early in summer (May to July), and generally spermatogenesis was absent in August. It could be, concluded that May to July is the period when adult males of this species are sexually active, and androgenic gland showed signs of increased secretory activity.

Androgenic gland는 대부분의 수컷 연갑류의 제1, 2차 성징의 분화와 성적행동을 유발시키는 호르몬을 분비하는 것으로 알려져 있다. 생식소지수와 정소 및 AC의 조직학적 조사결과, 본 종에서 정자형성이 활발히 일어나는 시기는 5$\~$7월이며 8월부터는 대부분의 개체에서 정자형성은 관찰되지 않았다. 따라서 본 종의 수컷은 5월에서 7월이 성적으로 가장 활발하며 이 시기에 AG는 increased secretory activity를 나타내는 여러 징후를 보인다.

Keywords

References

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